Blowing-engine or compressor.



110.724,641-l PATBNTED APR. 7', 190s.

' Er WIKL BLOWING ENGINE 0R GUMPRESSOR.-

APPLIOATIO FILED 00T. 23. 1901.

I No nonni.. 4 sums-snm 1.

AKM/@M PATENTED APR. 7, 1903.

.Y E. WIKI.

BLOWING ENGINE 0R COMPRESSOR.

. Y APPLICATION FILED 00T. 23, 1901.

4 SHEETS-SHEET 2.

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' PATENTED APRI 7; 1903.

E. WIKI.

Y BLOWING ENGINE 0R COMPRESSOR.

H0 MQDEL.

f' APPLIQATIQN FILED 00T. 2a. 1amI 4 SHEETS-SHEET 3..

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PATBNTED APR. 7, 19os.-

E. WIKI. BLOWING ENGINE 0R GOMPRESSOR.

APPLICATION ILED 00T. 23. 1901.

4 SHEETS-SHEET 4 'X0 MODEL.

LGE d UNITED. STATES PATENT OEEICE.

EDWARD WIKI, OF BASLE, SWITZERLAND.

BL'owlNe-ENGINE '0R COMPRESSOR.

SPECIFICATION forming partpf Letters Patent No. 724,641, dated April 7, 1903. Application filed octtber 23.1901. serial No. 79,616. clp model.)

To all whom it may concern.-

Beit known that I, EDWARD WIKI,} a citizen of the Republic of Switzerland, residing at Basle, in the canton of Basle and Republic of Switzerland, have invented certain new and llseful Improvements in Blowing-Engines or Compressors, of which the following is a true and exact'description, reference being had to the accompanying drawings, which form a part thereof.-

My invention relates to blowing-engines or compressors, and particularly to the construction of valves employed to regulate the admission and delivery from the compressioncylinder, my invention having for its object to provide a valve capable of working with great rapidity and certainty and without noise or destructive shock.

My improvements are applied to slide-valves and are particularly advantageous when used in connection with piston-valves, although in many features my invention can be usefully applied to slide-valves moving over a flat surface. The nature of my improvements will be best understood as described in connection with the drawings in which they are illustrated in what I believe to be their best development, and the Various features of im-I plan view of one of the flap-valves and springs;

Fig. 4, an edge view ofthe same parts; Fig. 5, an end View similar to Fig. 2, showing a modified arrangement of the spring-plates.

Fig. 6 is a plan view of the flap-valve andI springs as shown' in Eig. 5; Fig. 7, an edge view of said valve and spring-plates. Figs. 8 to 11, inclusive, are views showing successive positions of the valve during the opera-v tion of the blowing-engine.

A, Fig. 1, indicates the compressing-cylinder, from the ends of which lead the ports A A2,A by which the air enters and leaves the compressing-cylinder, said ports, as shown in Fig. 1, opening into the annular ports A3 and A4, which for most of their length communicate withV the ports A4 and A2 through the annular chambers a.' a2. Y v

B is the compressing-piston working in the cylinder A.

C and Oare the cylindrical portions of the piston-valve chamber, in which are formed the ports A3 A4.

C2 shows the connection of the piston-valve chamber with the air-admission passage C3, and C4 the communications ofthe valve-chamber with the receiver for the compressed air.

f D is the valve, which, as shown, is in the preferable form of a piston-valve having bars or walls (indicated at D D2) which as the valve reciprocates move alternately to opposite sides of the ports As and A4.

D3 and D4 are the contacting surfaces of the end walls E E of the valve, between which and the walls D and D2 are formed the cham- 'bers D5 and D6, which communicate with the ends of the valve-chamber through ports E E2 E8 E4 E5, forlned in the walls E.

F F indicate flap-valves, preferably made of thin metal and shaped so as to cover the vports E E2, &c., having for this purpose the cross-bars F', F2, F3, F4, and F5, separated by slots, as shown. These thin metal valves are preferably formed integral with spring-plates f, as shown, said spring-plates being preferably arranged radially, as shown in Figs. 2 and 5, and fastened near the center to the ends of the piston-valve, and where theproper spring strength cannot be secured in a single plate f, which may readily be the case owing to the fact that the radial arrangement necessarily limits the breadth of the spring-plate, the desired or necessary strength can be readily secured by securing additional springplates, vas shown atff2, Figs. 5, 6, and 7, onr

top of the springs f.

G G indicate the back bearings for the springs f. These back bearings should iiare outwardly, as shown, preferably forming segvments of a spherical surface tovwhich the springs naturally conform themselves when moved outward from their bearings on thel walls E. As shown, the back bearings G are supported on curved radial arms g', extend` ing out from a hub g, common to the arms and to the'back bearing-plates proper, and

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the back bearings are formed with circumferential slots,(indicated at G', G2,G5, and G4,) which aord free passage for the air, and are preferably formed, as shown, to register with the slots formed between the cross-bars of the flap-valves.

H indicates the valve-rod by which the piston-valve is actuated.

It will readily be understood that the thin spring-plate valves working on the ports formed in the piston-valve are exceedingly sensitive and quick in their operation, while at the same time their lack of weight avoids any injurious strain or noise in their operation, and the use of the curved back bearing prevent-s any injurious strain on the springplate and also arrests their motion without shock or objectionable noise. The formation of the flap-valves with the alternating slots and cross-bars greatly facilitates the free passage of the air. These features are of importance irrespective of the particular construction of the valve to which they are attached.

Referring now to the general construction illustrated in Figs. 1 and 8 to 1l and referring rst to Fig. 8, the parts are in the position in which the piston B is moved upward, and the valve D has also begun its upward movement, the compressed air from the cylinder A flowing through the port A and port A3 into the chamber D5 and thence through the ports in the wall E, lifting the spring Hapvalves and escaping freely into receiver connection C3. In Fig. 9 the wallDof the valve is shown as just having closed the port A3, so that the pressure in the chamber D5 and in the end of the valve-chamber is the same, which equality permits the spring-valves F to close or to begin to close. In Fig. l0 the valve is shown in its uppermost position, and in Fig. ll it is shown as having moved downward until the wall D is just about to reopen the connection between the port A3 and the chamber D5. It will thus be seen that during the entire period elapsing during the motion of the valve from the position shown in Fig. 9 to that shown in Fig. 1l the pressure in the chamber D5 has remained the same as that in the receiver. Consequently the spring-valves have ample time to close before the valve reaches the position shown in Fig. ll, after which the pressure in the chamber D5 is lower than the pressure in the receiver until substantially the time when the valve reaches the position shown in Fig. 8 and the springplates are again raised to permit the outward passage of the air. l

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a blowing-engine, the combination with a slide-valve moving over aport or ports of the compressing-cylinder and having a series of approximately parallel slots, forming ports, leadingithroigh it, through which ports the air from the cylinder is delivered to the receiver, of a spring-plate secured to the back of the valve at one end and extending across the ports, and a light metal Hap-valve formed with or attached to the spring, and having cross-bars arranged to extend over the slotports with slots separating said bars to give free passage to the air when the valve lifts.

2. In a blowing-engine, the combination with a slide-valve moving over a port or ports ot` the compressing-cylinder and having a series of approximately parallel slots, forming ports, leading through it, through which ports the air from the cylinder is delivered to the receiver, of aspring-plate secured to the back of the valve at one end and extending across the ports, said spring-plate being of progressively decreasing strength from its point of attachment outward, and a light metal [lapvalve formed with or attached to the spring, and having cross-bars arranged to extend over the slot-ports with slots separating said bars to give free passage to the air when the valve lifts.

3. In a blowing-engine, the combination with a slide-valve moving' over a port or ports of the compressing-cylinder and having a series of approximately parallel slots, forming ports, leading through it, through which ports the air from the cylinder is delivered to the receiver, of a spring-plate secured to the back of the valve at one end and extend-v ing across the ports, a light metal flap-valve formed with or attached to the spring, and having cross-bars arranged to extend over the slot-ports with slots separating said bars to give free passage to the air when the valve lifts, and a back bearing for the iiap-valve, flaring away from the slide-valve from the point of attachment of the spring-plate outward over the Hap-valve.

4. In a blowing-engine, the combination with a slide-valve moving over a port or ports of the compressing-cylinder and having a series of approximately parallel slots, forming ports, leading through it, through which ports the air from the cylinder is delivered to the receiver, of a spring-plate secured to the back of the valve at one end and extending across the ports, a light metal flap-valve formed with or attached to the spring and having cross-bars arranged to extend over the slot-ports with slots separating said bars to give free passage to the air when the valve lifts, and a back bearing for the flap-valve,A Haring away from the slide-valve from the point of attachment of the spring-plate outward over the Hap-valve, said back bearing being formed with slots extending through it to permit free escape of air.

5. In a blowing-engine, the combination with a slide-valve moving over a port or ports of the compressing-cylinder and having a series of approximately parallel slots, forming ports, leading through it, through which ports the air from the cylinder is delivered to the receiver, of a spring-plate secured to the back of the valve at one end and extending IIO - having cross-bars arranged to extend over the slot-ports with slots separating said bars to give free passage to the air when the valve lifts, and a back bearing for the flap-valve,-

tlaring away from the slidevalve from the point of attachment of the spring-plate outward over the ap-valve, said back bearing being formed with slots extending through it and registering with the slots formed between the cross-bars of the flap-valve, to permit free escape of air. Y

6. In a blowingengine, the combination with a slide-valve moving over a port or ports of the compressing-cylinder and having a series of approximately parallel slots, forming ports, leading through it, through which ports the air from the cylinder is delivered to the receiver, of a spring-plate secured to the back of the valve at one end and extending across the ports, said spring-plate being of progressively-decreasing .strength from its point of attachment outward, and having cross-bars formed integral with it, or with a portion of it, which extend over the slot-ports in the slide-valve and have slots separating said cross-bars.

7. In a blowingengine, the combination with a slide-valve moving over a port or ports of the compressing-cylinder and havinga series of radially-arranged groups of approximately concentric slots leading through it, through which ports the air from the cornpressing-cylinder is delivered to the receiver, of a series of radially-arranged spring-plates, one extending over each group of concentric slot-ports, and each secured to the slide-valve at its inner end, and a light metal flap-valve secured to each spring and made up of a series of cross-bars arranged to extend over the slots of the group of ports, with slots separating said bars, to give free passage to the air when the flap-valve opens.

8. In a blowing-engine, vthe combination with a slide-valve moving over a port or ports of the compressing-cylinder and having a series of radially-arranged groups of approximately concentric slots leading through it, through which ports the air from the compressing-cylinder is delivered to the receiver,

of a series of radially-arranged spring-plates, one extending over each group of concentric slot-ports, and each secured to the slide-valve at its innerend, a light metal flap-valve secured to each spring and made up of a series of cross-bars arranged to extend over the slots of the group of ports, with slots separating said bars to give free passage to the air when the nap-valve opens, and a back bearing for the series of valves having sub--V stantially the form of a spherical segment.

9. In a blowing-engine, a piston-valve regulating the admission and delivery of the compressing-cylinder, said valve being formed with chambers D5, D6, said chambers connecting with the receiver of the engine through ports in the ends of the piston-valve, and with the ports of the compressing-cylinder through ports in the walls of said pistonvalve, a series of thin metal flap-valves operating to close the ports in the ends of the piston-valve, a series of radially-arranged platesprings vsecured on the ends of the pistonvalve and acting to hold the flap-valves to their seats, and back bearings for said valves, also secured to the ends of the piston-valves, and flaring outward in substantially the form of spherical segments.

l0. In a blowing-engine, a piston-valve regulating the admission and delivery of the compressing-cylinder, said valve being formed with chambers D5, D6, lying within the heads of the valve, ports formed through the walls of the valve whereby the chambers connect with the ports of the compressing-cylinder, and a series of concentrically-arranged radial groups of ports formed in the heads of the valve, in combination with a series of radially-arranged plate-springs secured to the piston-valve heads at their inner ends and tially spherical section.

. EDWARD WIKI. Witnesses:

GEORGE GIFFORD, HERMAN STEBLER. 

